// This example demonstrates how to use the KeyUp event with the Help class to display// pop-up style help to the user of the application. When the user presses F1, the Help// class displays a pop-up window, similar to a ToolTip, near the control. This example assumes// that a TextBox control, named textBox1, has been added to the form and its KeyUp// event has been contected to this event handler method.privatevoid textBox1_KeyUp(object sender, System.Windows.Forms.KeyEventArgs e)
{
// Determine whether the key entered is the F1 key. Display help if it is.if(e.KeyCode == Keys.F1)
{
// Display a pop-up help topic to assist the user.
Help.ShowPopup(textBox1, "Enter your first name", new Point(textBox1.Right, this.textBox1.Bottom));
}
}

// This example demonstrates how to use the KeyUp event with the Help
// class to display pop-up style help to the user of the application.
// When the user presses F1, the Help class displays a pop-up window,
// similar to a ToolTip, near the control. This example assumes that a
// TextBox control, named textBox1, has been added to the form and its
// KeyUp event has been contected to this event handler method.
private void textBox1_KeyUp(Object sender,
System.Windows.Forms.KeyEventArgs e)
{
// Determine whether the key entered is the F1 key.
// Display help if it is.
if (e.get_KeyCode().Equals(Keys.F1)) {
// Display a pop-up help topic to assist the user.
Help.ShowPopup(textBox1, "Enter your first name",
new Point(textBox1.get_Right(), this.textBox1.get_Bottom()));
}
} //textBox1_KeyUp